viewport-mask-update.html | Explore in Territory

<!DOCTYPE html>
<html>
  <head>
    <script src="../../../resources/run-after-layout-and-paint.js"></script>
    <script>
      function repaintTest() {
        window.resizeTo(400, 300);
      }
    </script>
  </head>
  <body onload="runAfterLayoutAndPaint(repaintTest, true)">
    <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
      <!-- http://crbug.com/307161
           The mask should get resized on window resize.
      -->
      <defs>
        <mask id="mask" maskContentUnits="userSpaceOnUse">
          <rect width="39%" height="59%" fill="white"/>
        </mask>
      </defs>
      <rect width="100%" height="100%" mask="url(#mask)" fill="red"/>
      <rect width="40%" height="60%" fill="green"/>
    </svg>
  </body>
</html>

chromium/third_party/blink/web_tests/paint/invalidation/svg/viewport-mask-update.html